公开(公告)号：US20230064438A1

公开(公告)日：2023-03-02

申请号：US17460657

申请日：2021-08-30

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro CANNONE ,  Enrico FERRARA ,  Nicola ERRICO ,  Gea DONZELLI

IPC: H01L21/66 ,  G01R31/28

Abstract: Disclosed herein is a single integrated circuit chip including main logic that operates a vehicle component such as a valve driver. Isolated from the main logic within the chip is a safety area that operates to verify proper operation of the main logic. A checker circuit within the chip outside of the safety area serves to verify proper operation of the checker circuit. The checker circuit receives signals from the safety circuit and uses combinatorial logic circuit to verify from those signals that the check circuit is operating properly.

公开(公告)号：US20230281142A1

公开(公告)日：2023-09-07

申请号：US18116912

申请日：2023-03-03

Applicant: STMicroelectronics S.r.l.

Inventor： Filippo MINNELLA ,  Gea DONZELLI

IPC: G06F13/38 ,  G06F13/42 ,  H04L25/02

CPC classification number: G06F13/385 ,  G06F13/4291 ,  H04L25/0262

Abstract: A UART communication interface manages transmission/reception at a baud rate using a baud-rate detection circuit. An edge detector detects edges in a reception signal and resets a count value in a digital counter circuit indicating a time between two consecutive edges. In the absence of a detected edge, the digital counter circuit increases the count value. At a newly detected edge, a validation circuit verifies the count value by asserting a second control signal when the count value is smaller than a maximum, and otherwise de-asserting the second control signal. A register provides a threshold signal by storing the count value when the second control signal is asserted. The threshold signal stored by the register is updated when the time is in a permitted range corresponding to the duration of a single bit. The baud rate may be determined as a function of the threshold signal.